ResearchResource

Online Venn diagrams for up to 4 lists, SVG/PNG export

Compare two texts side by side; accept or reject each change and export the merged result

Chrome extension for highlighting, sticky notes and bookmark management in the native side panel — your data stays on your machine

Google Scholar paper search

Biomedical literature database

Authoritative citation index

Elsevier abstract & citation database

Elsevier full-text journal library

Springer academic full-text library

Wiley academic database

Electrical & electronics engineering literature

Open preprint repository

Social science & humanities preprints

AI-powered academic search

World's largest open-access full-text aggregator

Finds legal free versions of paywalled papers

China's master academic literature library

Journals, theses & conference papers

Full-text Chinese journal database

Free philosophy & social science library

National science & technology library

Open-access Chinese papers & preprints

Full-text search across the world's books

Global library union catalogue

Union catalogue of Chinese libraries

National Library of China

Chinese book database with reviews

Public-domain classic e-books

Public-domain e-books, carefully typeset

Lendable online library

Wayback Machine & digital archive

Chinese classics database

Chinese web-novel platform

Book CIP cataloguing & publication metadata lookup

Full-text global patent search

EPO worldwide patent search

WIPO international patent database

Official Chinese patent search

Full Chinese patent specifications by publication number

Reverse image search

Search Official Account articles

Multilingual subtitle database

Chinese laws, regulations & judicial case search

One of the world's most visited encyclopedias

Quotations with sourced entries

Business & management knowledge base

Species accounts from a university zoology museum

Every Astronomy Picture of the Day, with commentary

Life-science preprints — stake your priority before submitting

Health-science preprints, same platform as bioRxiv

Elsevier's journal matcher: title & abstract in, candidates out

Paste an abstract, get suggested journals and similar papers

Check a journal's open-access and self-archiving policy

Pre-submission checklist to spot predatory journals and fake conferences

SCI journal quartiles and impact factors, in Chinese

Tracks retractions and research misconduct

Post-publication peer review — check for concerns before you cite

Collaborative online LaTeX writing

Real-time English grammar and spelling checker

English rewriting with phrasing and tone suggestions

Writing and submission guidance for non-native English speakers

Open protocol platform with interactive, citable steps

Peer-reviewed life-science protocols

Video protocols, filmed step by step at the bench

Cold Spring Harbor's classic lab methods

Springer's protocol collection for molecular biology

Outsource experiments to certified labs

The persistent ID for researchers — used across submissions and grants

Personal profile that tracks citations and your h-index

Author records and citation tracking, linkable to ORCID

Log your peer-review and editorial work; feeds into your WoS profile

Look up a Scopus author profile and output by name

Add a plain-language summary to your paper and share it

Reference manager & researcher network

Subscribe to calls for papers by subject

Academic conference and deadline calendar, in Chinese

Search calls for papers by keyword — and a common submission system

Genes, sequences & biomedical records

Online sequence alignment

Vertebrate genome browser

Genome annotation browser

Protein-protein interaction networks

Gene expression & survival analysis

Functional enrichment analysis

Gene set enrichment analysis

Cancer genomic data explorer

Comprehensive gene annotation database

Online Venn diagrams for up to 4 lists, SVG/PNG export

Bioinformatics Q&A community

Authoritative protein sequence & annotation database

Protein 3D structure database

EBI proteomics data repository

European Bioinformatics Institute portal

Human protein expression & localization maps

Standard functional annotation of genes

Pathway & genome knowledge base

Curated pathway knowledgebase

Gene-list enrichment & analysis platform

Annotated protein-interaction knowledgebase

Desmos-style online grapher: type expressions, drag sliders, explore polar plots and inequality regions — all in your browser

Computational knowledge engine

Dynamic mathematics lab

Data science competitions & datasets

Dataset search for research

Cross-topic global statistics & economic data

Chinese scientific data repository with DOIs

Data on global development

Official Chinese statistics

Monoisotopic and average mass, natural isotope distributions, MF finder from m/z, peptide / oligonucleotide fragment tables, amino acid composition average m/z and polymer oligomer lists — all computed locally in the browser

Theoretical mass of every peptide from an in-silico protein digest, with cleavage rules identical to ExPASy PeptideMass — 25 enzymes/reagents, cysteine alkylation, methionine oxidation, 0-5 missed cleavages, seven ion forms up to 5+ charge, monoisotopic / average masses, plus intact protein mass and isoelectric point (Bjellqvist), computed locally in the browser

Theoretical a/b/c and x/y/z fragment ion m/z tables at 1+ to 3+ with -NH3 / -H2O secondary ions — global modification rules applied once and multi-line batch input with a table per peptide, computed locally in the browser

Batch GRAVY (grand average of hydropathy) for multi-FASTA protein sequences on the Kyte-Doolittle scale — gzip file import, ignore chars, custom separator and decimal sign, computed locally in the browser

Monoisotopic / average mass and elemental composition of glycans and glycopeptides: underivatized, permethylated, 2-AA and 2-AB labelled forms plus 52 ESI adduct m/z values — modelled on the NIST Glyco Mass Calculator, computed locally in the browser

Polyacrylamide gel recipes for SDS-PAGE: enter the gel count and the separating / stacking percentages and get ddH2O, 30% or 40% acrylamide stock, 1.5 M Tris pH 8.8 and 0.5 M Tris pH 6.8, 10% SDS, 10% APS and TEMED in ml and µl, plus a copyable six-step protocol — modelled on cytographica.com/lab/acryl2.html, computed locally in the browser

Melting temperature of PCR primers and oligos by the nearest-neighbor method (SantaLucia 1998 unified parameters) with adjustable Na+ salt and primer concentration, plus GC%, GC clamp, Wallace/Wetmur references, 3'-end self-complementarity, hairpin and homopolymer design warnings — batch paste, computed locally in the browser

Three bench calculations on one page: solve any blank of C1V1=C2V2 dilutions, interconvert molar mass / concentration / mass / volume (m=C·V·MW), and get buffer pH recipes from Henderson-Hasselbalch - mix two equimolar stocks or weigh the solid and titrate with HCl/NaOH - with pKa and MW data for 18 common buffers, computed locally in the browser

Medical formula calculator library

NIH database of chemical substances & bioactivity

Open-source reference manager

AI literature review assistant

AI search for scientific consensus

Literature connection graphs

Literature tracking & citation graphs

Social network for researchers

Graduate & research exchange community

Enter authors, title, container, year, volume/issue/pages and DOI to instantly format a reference in seven styles (APA, MLA, Chicago, Harvard, IEEE, Vancouver, GB/T 7714) for eight source types (journal, book, web, conference, thesis, chapter, report, newspaper) - look up metadata by DOI/ISBN, get in-text citations, build an auto-sorting multi-reference list and batch-export BibTeX/RIS, or paste an existing reference to detect its style; mostly in your browser

Open-source environment for statistical computing and graphics — the lingua franca of academic statistics

R's official package repository: 20,000+ extensions for statistics and plotting

Home of the RStudio IDE and Quarto — the working environment for data analysis

R package ecosystem for bioinformatics: differential expression, enrichment and omics visualisation

Hundreds of R plotting examples with full code, sorted by chart type and purpose

R's dominant plotting system — publication-grade charts through a grammar of graphics

The commercial standard for biomedical statistics and figures, with a point-and-click workflow

Data analysis and publication-quality scientific graphing, widely used in the physical sciences

Free and open-source statistics with an SPSS-style interface and built-in Bayesian analysis

Free and open-source statistics — migrating from SPSS costs almost no learning time

Statistics Q&A community; search here before asking about methodology

A teaching site that explains statistical concepts plainly — reach for it when p-values or test choice confuse you

Tutorial library for statistics and programming, organised by what you are trying to do

A complete reference for implementing statistical methods in Excel

Engineering and numerical computing platform with statistics and graphics toolboxes

Statistical software common in econometrics and the social sciences

The cornerstone Python library for tabular and time-series data analysis

Statistical graphics on top of matplotlib: distribution and regression plots in a few lines

Python's most general plotting library — it can draw almost anything

Simplified ⇄ Traditional using Wikipedia tables, with Taiwan / Hong Kong / Mainland wording

Compare two texts side by side; accept or reject each change and export the merged result

Merge, split, organise, convert, watermark and protect PDFs — eight tools on one page, processed locally in your browser

TinyPNG-style image compression: lossy PNG quantization (≤256 colors with dithering, lossless when colors fit), JPEG re-encoding and WebP conversion with before/after compare and batch ZIP download — everything stays in your browser

Convert between PNG / JPEG / WEBP / BMP / GIF / SVG / AVIF / TIFF / ICO / APNG: batch up to 50 images (select several or drop a folder, results as one ZIP), quality slider, fill colour for transparent areas, rotate/flip and resize, grayscale / B&W / sepia colour modes and text watermarks — every conversion happens locally in your browser

Shrink animated GIFs: every frame is decoded and recomposed, then frame differencing keeps only the pixels that changed, near-identical colours are merged, and palette reduction, dithering, rescaling and frame decimation are all adjustable — live before/after sizes, batch mode with ZIP export, transparency and loop count preserved, entirely in your browser

Colour-vision-deficiency simulation plus a figure palette check: upload a chart, heatmap or micrograph and see at once how it looks with protanopia, deuteranopia, tritanopia, total colour blindness and in black-and-white print, with severity adjustable from 0 to 100%. The palette is extracted automatically and every pair is compared with CIEDE2000 to flag colours that blur together, alongside a ΔE00 matrix, a greyscale distinguishability check and a safety audit of 34 common colourmaps (viridis / cividis / turbo / jet / rainbow / RdYlGn and more). Based on the Machado 2009 physiological model; computed locally in the browser, nothing is uploaded

Read text aloud in the browser: paste up to 2,500 characters, pick a language and voice your browser and OS actually provide, tune rate, pitch and volume, long text is chunked automatically with pause / resume / stop — modelled on crikk.com/text-to-speech, synthesis runs on your device

Voice typing in the browser: press Start and speak — text appears at the caret in real time, say "period", "comma" or "new line" to insert punctuation, with continuous dictation, auto-save and txt / Word export. Modelled on speechnotes.co; recognition runs inside your browser and audio is never uploaded

Geolocation, ISP & ASN for any IPv4/IPv6 address; shows your own IP on open

AI background removal in one click

Open-source image compression by Google: compare WebP, AVIF and MozJPEG side by side with a live quality slider — drag a photo in, everything runs locally

Universal file format conversion

QR code generator & decoder

Disposable inbox for verification codes

Cross-platform cloud storage & file sync

15 GB of free cloud storage

Microsoft cloud drive, tight Office integration

China's largest personal cloud drive

Smart cloud drive with generous free storage

Xiaomi's open model platform — free API credits on sign-up

Huawei Cloud AI coding assistant — free tokens on sign-up

ByteDance's AI coding IDE — tokens via the event page

AI work assistant — free credits with an invite link

OpenAI's flagship chat assistant

Google's multimodal AI assistant

China's open-weight frontier model

Anthropic's long-context AI assistant

Moonshot AI long-context assistant

xAI assistant wired into X data

Top-tier AI image generation

AI song generation in one click

AI decks, docs & presentations

Ad-free academic AI search

ByteDance AI image & video creation

MiniMax video generation

AI video generation and editing: text-to-video, image-to-video and camera moves, a film-grade post-production toolkit

AI avatar videos: multilingual voice-over with lip sync, for batch-producing course and training videos

The world's largest model community

Alibaba open-model community

Aggregate API gateway for many models

Run large models locally

NIH-funded project & grant search

Unified US federal grants portal

Global research funding opportunity search

US National Science Foundation

EU Horizon Europe funding & tenders

EU-funded research results database

Wellcome Trust biomedical funding

Apply to & track National Natural Science Fund grants

Funding policies & programme guidelines

National key R&D programme applications

CNSS fund applications & reviews

Online courses from world universities

Course platform founded by MIT & Harvard

Global skills course marketplace

Free MIT course materials

Free general education for everyone

Open chemistry textbooks & course materials

University lectures with Chinese subtitles

National-level courses from top universities

MOOC platform started at Tsinghua

Credit courses for Chinese universities

Official postgraduate entrance exam portal

Postgraduate exam news & experience forum

Chinese corpus search system from Peking University

Word frequency curves across five centuries of books

High-quality rare book library

Full-text reading & search of Chinese classics

High-resolution classical paintings & calligraphy

Merck's reagent & chemical supplier

Instruments, reagents & consumables

Chinese research reagent supplier

Reagent & instrument marketplace

Research procurement platform

Chinese chemical reagent brand

Leading Chinese bio-assay reagent brand

Histology & lab testing services

siRNA reagents & gene synthesis

Peptide synthesis & gene services

Recombinant proteins & antibodies

Molecular biology enzymes & restriction enzymes

Glycobiology & labelling reagents

Chemical reagents & materials supplier

Antibody & life-science reagent distributor

Tokyo Chemical Industry reagents

Chemical property & supplier directory

Alibaba's mega marketplace

Direct retail with fast delivery

Social group-buying at low prices

Appliance & electronics retailer

Second-hand marketplace

Streetwear commerce, authenticated first

Online design templates

Collaborative interface design

Chinese online UI design tool

Commercial templates & background removal

High-resolution free photography

Free HD photos & video

Free stock media for commercial use

High-quality wallpapers

All 3781 emoji of Unicode 16.0 with codepoints, UTF-8 bytes, HTML entities and names; search by name or codepoint and copy in one click

Turn text into block-letter banners from a built-in 5x7 font, and any image into ASCII art with three character ramps and a 20-200 character width

Alibaba's vector icon library

The world's largest free font library

Classic icon font library

ByteDance open-source icon set

Free commercial-use Chinese fonts

The world's largest code hosting platform

Integrated DevOps platform

Authoritative web documentation

Interactive coding tutorials

Chinese programming tutorials

API docs for many languages in one place

Animated data structures & algorithms

Linux command quick reference

Global Q&A for programmers

High-quality Chinese dev community

Community for creators & developers

Chinese developer Q&A

Open-source news for Chinese developers

Curated reviews of free Windows, Android and macOS utilities — a reliable place to hunt for lab and research software

Online percent-encoding tool: standard mode (encodeURIComponent, RFC 3986) and form mode (application/x-www-form-urlencoded, space becomes +) convert as you type, with character/UTF-8 byte stats, an escape map and local history — 100% in-browser, nothing is uploaded

Online regex tester like RegExr: real-time highlighted matches, group details, $1 replacement preview, syntax cheat sheet and step-by-step explanation

14 categories and 212 units — length, area, volume, mass, time, speed, temperature, pressure, power, energy, data (GB vs GiB), fuel economy, angle and number bases; converts as you type, factors taken from their definitions

Four loan tools on one page: a loan calculator (equal-installment / equal-principal payments with a month-by-month schedule you can export to CSV), a mortgage calculator (commercial / housing-fund / combined loans), a mortgage prepayment estimator (pay off in full, shorten the term or lower the payment, see interest saved), and an installment-fee calculator with the real APR by IRR — all computed locally in your browser

China's individual income tax by the cumulative-withholding method (this-period and annual tax, take-home pay, average rate, seven-bracket rate table, special additional deductions) plus a five-insurances-one-fund breakdown of employee/employer contributions, net pay before tax and total employer cost — all computed locally in your browser

Enter an 18-digit mainland resident ID number and read out the registered region, birth date, gender, exact age, constellation and zodiac animal, with the GB 11643 MOD 11-2 check digit re-derived - colour-coded card diagram, parsed entirely in your browser, the number is never stored or sent

Enter the birth date and time once at the top and one screen computes everything together: a full birthday read-out (lunar date, solar terms, animal, constellation, exact and nominal age, life number, year-pillar sound element), a rule-accurate BaZi four-pillar chart (LiChun year boundary, solar-term months, optional 23:00 day switch) with hidden stems, sound elements, ten gods and the five-element tally, plus animal-to-years lookup, benming years and zodiac matching — live as you type, entirely in your browser

Build cron expressions online: presets for every minute / hour / day / week / month, plus custom fields supporting *, step values */n, ranges a-b and lists, validated as you type with a live preview of the next 10 runs in your local time zone, one-click copy, pure client-side calculation

JSON formatter & validator

Browser compatibility tables

Hand-drawn style whiteboard

Badges for open-source projects

Site-wide traffic & conversion stats

Indexing status & search traffic

Centralize analytics & marketing tags

Bing indexing & site map tools

Yandex webmaster tools

Submit pages & verify ownership

Content monetization ad network

Ad inventory & revenue management

Search & display advertising

ByteDance ad platform (Douyin)

Load speed & waterfall analysis

HTTP security-header audit

SEO weight & keyword analysis

Fetch and read any site's robots.txt: user-agent groups, Allow / Disallow / Crawl-delay / Sitemap rules, a path-access verdict and a syntax audit

The world's biggest community forum

High-quality Chinese Q&A community

China's social news hub

TikTok China creator platform

Xiaohongshu creator platform

Article publishing console

Uploads & channel management

Zhihu creator center

WeChat article layout editor

WeChat graphic layout design

New-media data platform

Sign in to manage cloud servers & object storage

Cloud servers & domains

CDN, DNS & security

Measure download and upload throughput, ping and jitter on your own line — live gauge, unit switch and the last five runs, all in the browser

The world's largest video platform

China's top video site: docs, courses & anime

Global streaming giant

Tencent's streaming platform

Dramas, films & variety shows

Alibaba's video platform

Free official CCTV programmes

The world's film & TV database

Open movie & TV metadata database

Ratings, reviews & watchlists

Global music streaming

Apple music streaming

Long-standing Chinese music platform

Music community with comments

Audiobooks, podcasts & audio platform

Audio dramas & voice content

Online radio & podcasts

Listen to live radio around the world

Ambient noise mixer for focus

Official end-of-day turnover & trading stats

Official quotes, filings & monthly statistics

Statutory disclosure site for listed companies

Top-trader lists, northbound flow & lockup expiries

Monetary policy, financial statistics & rate notices

Company registry, legal & equity information

Real-time wires for A-shares & global markets

Global markets & macro news, in Chinese

24/7 macro newswire & economic calendar

Business & policy coverage from the TV network

Investigations & macro business news (paywalled)

HK & US equities with a reader community

Finance channel of the Sina portal

Quotes software & company profiles

Ask about the market or screen stocks in plain language

Quotes, data centre & brokerage portal

Mutual-fund NAVs, holdings & screener

Investor community, portfolios & stock discussion

Per-stock message boards, a read on sentiment

Short-term theme & session-replay community

Community for HK & US stock investors

Postdoc job board run by Science

Academic jobs & career advice from Nature

UK university & research job board

EU researcher jobs & mobility support

European academic & research vacancies

Chinese postdoc portal: enrollment, funding

Official degree & student record verification

Direct-chat job platform

Comprehensive job board

Veteran Chinese job site

Official railway ticketing

Flights, hotels & travel

Travel metasearch & booking

Maps, navigation & live traffic

Estimate auto insurance premiums for seven coverage lines — compulsory traffic liability, third-party liability, vehicle damage (theft, fire, glass and the deductible waiver have been folded into it since the 2020 reform), occupant liability, scratch, out-of-list medical expenses and vehicle and vessel tax — priced with the current compulsory-insurance float (five region tiers A-E) and industry baseline rates, instantly and entirely in your browser

Court filing fees per China's Measures on Payment of Litigation Fees: tiered quick formulas for property and other cases, plus execution application fees, preservation fees, payment orders, public summons and setting-aside applications, with a rate lookup table

Gregorian–lunar month-by-month calendar with the 24 solar terms, holidays and workday flags, traditional almanac notes and auspicious-hour tables, plus Gregorian/lunar conversion

Live side-by-side clocks for any two cities with automatic daylight-saving handling, cross-time-zone conversion and a world-city clock wall